flipperzero-firmware/lib/nfc/helpers/mf_classic_dict.c

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[FL-2605] NFC new design (#1364) * nfc: add new read scene * lib: refactore nfc library * mifare desfire: add read card fuction * lib nfc: add auto read worker * nfc: add supported cards * nfc: add mifare classic read success scene * nfc: add troyka support * submodule: update protobuf * nfc: mifare classic keys cache * nfc: rework mifare classic key cache * Correct spelling * nfc: add user dictionary * nfc: introduce block read map in fff * nfc: rework dict attack * nfc: improve dict attack * nfc: rework mifare classic format * nfc: rework MFC read with Reader * nfc: add gui for MFC read success scene * nfc: fix dict attack view gui * nfc: add retry and exit confirm scenes * nfc: add retry and exit scenes navigation * nfc: check user dictionary * nfc: remove unused scenes * nfc: rename functions in nfc worker * nfc: rename mf_classic_dict_attack -> dict_attack * nfc: change scenes names * nfc: remove scene tick events * nfc: rework dict calls with buffer streams * nfc: fix notifications * nfc: fix mf desfire navigation * nfc: remove notification from mf classic read success * nfc: fix read sectors calculation * nfc: add fallback for unknown card * nfc: show file name while emulating * nfc: fix build * nfc: fix memory leak * nfc: fix desfire read * nfc: add no dict found navigation * nfc: add read views * nfc: update card fix * nfc: fix access bytes save * nfc: add exit and retry confirm to mf ultralight read success * nfc: introduce detect reader * nfc: change record open arg to macros * nfc: fix start from archive Co-authored-by: Astra <astra@astrra.space> Co-authored-by: あく <alleteam@gmail.com>
2022-07-26 15:30:49 +00:00
#include "mf_classic_dict.h"
#include <lib/toolbox/args.h>
#include <lib/flipper_format/flipper_format.h>
#define MF_CLASSIC_DICT_FLIPPER_PATH EXT_PATH("nfc/assets/mf_classic_dict.nfc")
#define MF_CLASSIC_DICT_USER_PATH EXT_PATH("nfc/assets/mf_classic_dict_user.nfc")
#define TAG "MfClassicDict"
#define NFC_MF_CLASSIC_KEY_LEN (13)
struct MfClassicDict {
Stream* stream;
uint32_t total_keys;
};
bool mf_classic_dict_check_presence(MfClassicDictType dict_type) {
Storage* storage = furi_record_open(RECORD_STORAGE);
bool dict_present = false;
if(dict_type == MfClassicDictTypeFlipper) {
dict_present = storage_common_stat(storage, MF_CLASSIC_DICT_FLIPPER_PATH, NULL) == FSE_OK;
} else if(dict_type == MfClassicDictTypeUser) {
dict_present = storage_common_stat(storage, MF_CLASSIC_DICT_USER_PATH, NULL) == FSE_OK;
}
furi_record_close(RECORD_STORAGE);
return dict_present;
}
MfClassicDict* mf_classic_dict_alloc(MfClassicDictType dict_type) {
MfClassicDict* dict = malloc(sizeof(MfClassicDict));
Storage* storage = furi_record_open(RECORD_STORAGE);
dict->stream = buffered_file_stream_alloc(storage);
furi_record_close(RECORD_STORAGE);
bool dict_loaded = false;
do {
if(dict_type == MfClassicDictTypeFlipper) {
if(!buffered_file_stream_open(
dict->stream, MF_CLASSIC_DICT_FLIPPER_PATH, FSAM_READ, FSOM_OPEN_EXISTING)) {
buffered_file_stream_close(dict->stream);
break;
}
} else if(dict_type == MfClassicDictTypeUser) {
if(!buffered_file_stream_open(
dict->stream, MF_CLASSIC_DICT_USER_PATH, FSAM_READ_WRITE, FSOM_OPEN_ALWAYS)) {
buffered_file_stream_close(dict->stream);
break;
}
}
// Read total amount of keys
string_t next_line;
string_init(next_line);
while(true) {
if(!stream_read_line(dict->stream, next_line)) break;
if(string_get_char(next_line, 0) == '#') continue;
if(string_size(next_line) != NFC_MF_CLASSIC_KEY_LEN) continue;
dict->total_keys++;
}
string_clear(next_line);
stream_rewind(dict->stream);
dict_loaded = true;
FURI_LOG_I(TAG, "Loaded dictionary with %d keys", dict->total_keys);
} while(false);
if(!dict_loaded) {
buffered_file_stream_close(dict->stream);
free(dict);
dict = NULL;
}
return dict;
}
void mf_classic_dict_free(MfClassicDict* dict) {
furi_assert(dict);
furi_assert(dict->stream);
buffered_file_stream_close(dict->stream);
stream_free(dict->stream);
free(dict);
}
uint32_t mf_classic_dict_get_total_keys(MfClassicDict* dict) {
furi_assert(dict);
return dict->total_keys;
}
bool mf_classic_dict_get_next_key(MfClassicDict* dict, uint64_t* key) {
furi_assert(dict);
furi_assert(dict->stream);
uint8_t key_byte_tmp = 0;
string_t next_line;
string_init(next_line);
bool key_read = false;
*key = 0ULL;
while(!key_read) {
if(!stream_read_line(dict->stream, next_line)) break;
if(string_get_char(next_line, 0) == '#') continue;
if(string_size(next_line) != NFC_MF_CLASSIC_KEY_LEN) continue;
for(uint8_t i = 0; i < 12; i += 2) {
args_char_to_hex(
string_get_char(next_line, i), string_get_char(next_line, i + 1), &key_byte_tmp);
*key |= (uint64_t)key_byte_tmp << 8 * (5 - i / 2);
}
key_read = true;
}
string_clear(next_line);
return key_read;
}
bool mf_classic_dict_rewind(MfClassicDict* dict) {
furi_assert(dict);
furi_assert(dict->stream);
return stream_rewind(dict->stream);
}
bool mf_classic_dict_add_key(MfClassicDict* dict, uint8_t* key) {
furi_assert(dict);
furi_assert(dict->stream);
string_t key_str;
string_init(key_str);
for(size_t i = 0; i < 6; i++) {
string_cat_printf(key_str, "%02X", key[i]);
}
string_cat_printf(key_str, "\n");
bool key_added = false;
do {
if(!stream_seek(dict->stream, 0, StreamOffsetFromEnd)) break;
if(!stream_insert_string(dict->stream, key_str)) break;
key_added = true;
} while(false);
string_clear(key_str);
return key_added;
}